Patents Assigned to Fujitec Co., Ltd.
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Publication number: 20150090535Abstract: When a specific destination floor call is made, the control unit assigns an elevator of which waiting time is within the reference time from the plurality of elevators to the specific destination floor call, the waiting time being a time from a time when the specific destination floor call is made to a time when the specific user can get on an elevator at the specific floor. Further, when a general destination floor call is made, the control unit assigns one of the plurality of elevators in response to the general destination floor call such that an elevator of which waiting time to the specific destination floor call that is made after the general destination floor call is within the reference time is left.Type: ApplicationFiled: September 26, 2014Publication date: April 2, 2015Applicant: FUJITEC CO., LTD.Inventor: Masami Nakagawa
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Patent number: 8960374Abstract: Provided are a group control method and a group control device capable of efficiently controlling the operation of elevators in diversified traffic situations and under a variety of specification conditions required for a group management system. A plurality of elevators are placed in service for a plurality of floors, an evaluation index for a newly made hall call is calculated, and the best suited car is selected and assigned to the hall call based on the evaluation index in the group control method of elevators. A waiting time expectation value of all passengers on all floors for each direction, either that have already occurred or that are expected to occur within a predetermined time period, is taken as the evaluation index, the waiting time expectation value being the expectation value for the sum or the average of waiting time.Type: GrantFiled: December 25, 2009Date of Patent: February 24, 2015Assignee: Fujitec Co., Ltd.Inventor: Masami Nakagawa
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Patent number: 8742702Abstract: In a moving magnet type linear motor including a stator with a plurality of coils placed in one direction and a mover with a permanent magnet opposed to the stator, a position detector detects the position of the mover. The position detector includes a magnetic body fixed to the mover. One or two or more coils are selected and a voltage is applied to the selected coil while a current or a voltage induced in a coil adjacent to the selected coil is measured, and the position of the magnetic body that changes in response to the position of the mover is determined based on the measured current or the measured voltage.Type: GrantFiled: December 25, 2009Date of Patent: June 3, 2014Assignees: Sabanci University, Fujitec Co., Ltd.Inventors: Sandor Markon, Ahmet Onat
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Patent number: 8672098Abstract: There is provided an elevator safety device that can prevent a light beam from being looked into. The elevator safety device according to the present invention includes light emitting means for emitting a light beam crossing an entrance; light receiving means for detecting the light beam emitted from the light emitting means; foreign matter detection means for generating a foreign matter detection signal when detection of the light beam by the light receiving means is interrupted; and control means. The control means causes the light emitting means to stop an emission in a fully opened state of car doors, and causes the light emitting means to start the emission at a start of or during a closing operation of the car doors.Type: GrantFiled: September 18, 2009Date of Patent: March 18, 2014Assignee: Fujitec Co., Ltd.Inventors: Hiroshi Kashiwakura, Keishiro Hirohata, Takuya Fujii
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Patent number: 8584809Abstract: In a safety device for an elevator, on one car door among a pair of car doors, a light-emitting/light-receiving unit is disposed facing downward at an upper end position of a vertical line separated by a predetermined distance from an end face in a closing direction, which is to abut the other car door, toward the side of the other car door, and a first reflecting member is disposed facing upward at a lower end position of the vertical line. A housing space that houses the light-emitting/light-receiving unit in a state where both car doors are closed is formed on the other car door, and a second reflecting member is disposed facing upward at a bottom portion of the housing space and extends from the same position as an end face in a closing direction of the other car door toward the back of the housing space.Type: GrantFiled: August 24, 2009Date of Patent: November 19, 2013Assignee: Fujitec Co., Ltd.Inventors: Xiao Sun, Weifeng Chen, Kunpeng Yang, Hiroshi Kashiwakura, Takuya Fujii, Keishiro Hirohata
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Patent number: 8502421Abstract: The moving magnet type linear motor according to the present invention comprises a stator comprising a plurality of coils arranged in a single direction and having a both ends support structure supporting both ends of the stator in a direction perpendicular to said single direction, a pair of movers comprising a plurality of permanent magnets arranged opposing the sides of the stator respectively and capable of relative movement in said single direction with respect to each other, and guidance mechanisms guiding both the movers independently and movably in said single direction, and one of the movers is connected to a load.Type: GrantFiled: December 18, 2008Date of Patent: August 6, 2013Assignees: Sabanci University, Fujitec Co., Ltd.Inventors: Sandor Markon, Ender Kazan, Ahmet Onat
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Publication number: 20120091928Abstract: The present invention provides a position detector which can detect the position of a mover on the side of a stator, and which realizes detection with high accuracy in a moving magnet type linear motor. In a moving magnet type linear motor including: a stator 2 with a plurality of coils placed in one direction; and a mover 3 with a permanent magnet so placed as to be opposed to the stator 2, a position detector according to one embodiment of the present invention detects the position of the mover 3. The position detector includes a magnetic body 5 fixed to the mover 3. One or two or more coils are selected and a voltage is applied to the selected coil while a current or a voltage induced in a coil adjacent to the selected coil is measured, and the position of the magnetic body 5 that changes in response to the position of the mover 3 is determined based on the measured current or the measured voltage.Type: ApplicationFiled: December 25, 2009Publication date: April 19, 2012Applicants: FUJITEC CO., LTD., SABANCI UNIVERSITYInventors: Sandor Markon, Ahmet Onat
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Publication number: 20110284329Abstract: Provided are a group control method and a group control device capable of efficiently controlling the operation of elevators in diversified traffic situations and under a variety of specification conditions required for a group management system. A plurality of elevators are placed in service for a plurality of floors, an evaluation index for a newly made hall call is calculated, and the best suited car is selected and assigned to the hall call based on the evaluation index in the group control method of elevators. A waiting time expectation value of all passengers on all floors for each direction, either that have already occurred or that are expected to occur within a predetermined time period, is taken as the evaluation index, the waiting time expectation value being the expectation value for the sum or the average of waiting time.Type: ApplicationFiled: December 25, 2009Publication date: November 24, 2011Applicant: FUJITEC CO., LTD.Inventor: Masami Nakagawa
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Publication number: 20110221282Abstract: The moving magnet type linear motor according to the present invention comprises a stator comprising a plurality of coils arranged in a single direction and having a both ends support structure supporting both ends of the stator in a direction perpendicular to said single direction, a pair of movers comprising a plurality of permanent magnets arranged opposing the sides of the stator respectively and capable of relative movement in said single direction with respect to each other, and guidance mechanisms guiding both the movers independently and movably in said single direction, and one of the movers is connected to a load.Type: ApplicationFiled: December 18, 2008Publication date: September 15, 2011Applicants: SABANCI UNIVERSITY, FUJITEC CO., LTD.Inventors: Sandor Markon, Ender Kazan, Ahmet Onat
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Publication number: 20110192684Abstract: There is provided an elevator safety device that can prevent a light beam from being looked into. The elevator safety device according to the present invention includes light emitting means for emitting a light beam crossing an entrance; light receiving means for detecting the light beam emitted from the light emitting means; foreign matter detection means for generating a foreign matter detection signal when detection of the light beam by the light receiving means is interrupted; and control means. The control means causes the light emitting means to stop an emission in a fully opened state of car doors, and causes the light emitting means to start the emission at a start of or during a closing operation of the car doors.Type: ApplicationFiled: September 18, 2009Publication date: August 11, 2011Applicant: FUJITEC CO., LTD.Inventors: Hiroshi Kashiwakura, Keishiro Hirohata, Takuya Fujii
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Publication number: 20110155511Abstract: In a safety device for an elevator, on one car door among a pair of car doors, a light-emitting/light-receiving unit is disposed facing downward at an upper end position of a vertical line separated by a predetermined distance from an end face in a closing direction, which is to abut the other car door, toward the side of the other car door, and a first reflecting member is disposed facing upward at a lower end position of the vertical line. A housing space that houses the light-emitting/light-receiving unit in a state where both car doors are closed is formed on the other car door, and a second reflecting member is disposed facing upward at a bottom portion of the housing space and extends from the same position as an end face in a closing direction of the other car door toward the back of the housing space.Type: ApplicationFiled: August 24, 2009Publication date: June 30, 2011Applicant: FUJITEC CO., LTD.Inventors: Xiao Sun, Weifeng Chen, Kunpeng Yang, Hiroshi Kashiwakura, Takuya Fujii, Keishiro Hirohata
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Patent number: 7882937Abstract: An elevating machine control apparatus controls an inverter (4) to drive an AC motor (5) connected to the inverter (4) with AC power, and energizes a power generation braking resistor (13) to apply a brake during regenerative operation of the AC motor (5). The apparatus prohibits the elevating machine from starting operating and interrupts power supply to the power generation braking resistor (13) if the DC stage voltage of the inverter (4) has a ripple quantity of a set value or more when the elevating machine is being stopped. Alternatively, the apparatus commands the elevating machine to stop operating and interrupts power supply to the power generation braking resistor (13) if the DC stage voltage of the inverter (4) during regenerative operation is a reference value or less when the elevating machine is in operation.Type: GrantFiled: March 13, 2006Date of Patent: February 8, 2011Assignee: Fujitec Co., Ltd.Inventor: Takao Okada
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Patent number: 7628263Abstract: A transport device includes a plurality of endlessly connected steps (1) so that these steps (1) circulate. One or more of the plurality of steps (1) have one or more weights (11) detachably attached thereto. These weights (11) are contained in the space surrounded by a tread (2), a riser (4), and a yoke (3) that form each of the steps (1), and supported on the rear surface of the tread (2) in a row by a channel member (12) of U-shape in cross section.Type: GrantFiled: March 13, 2006Date of Patent: December 8, 2009Assignee: Fujitec Co., Ltd.Inventors: Junichi Hirota, Kenro Matsuo, Masashi Tsuchihata
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Publication number: 20090266675Abstract: A transport device includes a plurality of endlessly connected steps (1) so that these steps (1) circulate. One or more of the plurality of steps (1) have one or more weights (11) detachably attached thereto. These weights (11) are contained in the space surrounded by a tread (2), a riser (4), and a yoke (3) that form each of the steps (1), and supported on the rear surface of the tread (2) in a row by a channel member (12) of U-shape in cross section.Type: ApplicationFiled: March 13, 2006Publication date: October 29, 2009Applicant: FUJITEC CO., LTD.Inventors: Junichi Hirota, Kenro Matsuo, Masashi Tsuchihata
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Patent number: 7510055Abstract: In an elevator comprising an entrance frame provided on an entrance leading from a landing hall to a hoistway and having an upper frame (103) and a vertical frame (102, 102), and landing doors (110, 110) arranged on the entrance frame with a gap and to be guided by a sill (104) for opening-closing an opening of the entrance frame, the landing doors (110, 110) have smoke shielding members (120, 130, 111) which are provided on a top portion, side portion, and a bottom portion of the landing doors (110, 110) for preventing the infiltration of smoke. The smoke shielding member (130) on the side portion is in contact with the smoke shielding member (111) on the bottom portion at a lower position, and is in contact with the smoke shielding member (120) on the top portion at an upper position.Type: GrantFiled: May 12, 2003Date of Patent: March 31, 2009Assignees: Toyo Shutter Co., Ltd., Fujitec Co., Ltd.Inventors: Mitsuru Morotome, Hiroyuki Yoshida, Atsushi Irie, Mizuki Yamauchi
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Publication number: 20090058333Abstract: An elevating machine control apparatus controls an inverter (4) to drive an AC motor (5) connected to the inverter (4) with AC power, and energizes a power generation braking resistor (13) to apply a brake during regenerative operation of the AC motor (5). The apparatus prohibits the elevating machine from starting operating and interrupts power supply to the power generation braking resistor (13) if the DC stage voltage of the inverter (4) has a ripple quantity of a set value or more when the elevating machine is being stopped. Alternatively, the apparatus commands the elevating machine to stop operating and interrupts power supply to the power generation braking resistor (13) if the DC stage voltage of the inverter (4) during regenerative operation is a reference value or less when the elevating machine is in operation.Type: ApplicationFiled: March 13, 2006Publication date: March 5, 2009Applicant: FUJITEC CO., LTD.Inventor: Takao Okada
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Patent number: 7178637Abstract: The invention provides an elevator apparatus comprising a cage 1 disposed inside a path of upward or downward movement vertically movably, a counterweight 2 vertically movable with the upward or downward movement of the cage 1, and a lift drive mechanism for driving the cage 1 upward or downward. The drive mechanism comprises a sheave 42 disposed inside the path, ropes 3 extending along a route around the sheave 42, and a drive device 5 in engagement with the ropes 3. The drive device 5 comprises a belt transmission provided alongside the ropes 3 and revolvingly movable along the rope extension route, a mechanism for pressing a belt surface of the belt transmission into contact with the ropes 3, and a drive motor for driving the belt transmission. The cage can be driven upward or downward without using any traction sheave, while the cage can be reduced in weight.Type: GrantFiled: February 14, 2002Date of Patent: February 20, 2007Assignee: Fujitec Co., Ltd.Inventors: Takashi Asano, Yosuke Goda, Kenichi Yamamoto, Mamoru Harada
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Publication number: 20060175147Abstract: In an elevator comprising an entrance frame provided on an entrance leading from a landing hall to a hoistway and having an upper frame (103) and a vertical frame (102, 102), and landing doors (110, 110) arranged on the entrance frame with a gap and to be guided by a sill (104) for opening-closing an opening of the entrance frame, the landing doors (110, 110) have smoke shielding members (120, 130, 111) which are provided on a top portion, side portion, and a bottom portion of the landing doors (110, 110) for preventing the infiltration of smoke. The smoke shielding member (130) on the side portion is in contact with the smoke shielding member (111) on the bottom portion at a lower position, and is in contact with the smoke shielding member (120) on the top portion at an upper position.Type: ApplicationFiled: May 12, 2003Publication date: August 10, 2006Applicants: TOYO SHUTTER CO., LTD.., FUJITEC CO., LTDInventors: Mitsuru Morotome, Hiroyuki Yoshida, Atsushi Irie
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Patent number: 6984797Abstract: A push-button switch has a plunger to be pressed so as to activate its main body supported by a base member. A cap serving as a pressing member is on an outer edge portion of the plunger. The outer periphery of the cap is surrounded by a frame part of a lens member made of a transparent resin material such that the light from a light source disposed near the center of the plunger is guided to the upper edge part of the frame part.Type: GrantFiled: June 15, 2004Date of Patent: January 10, 2006Assignees: OMRON Corporation, Fujitec Co., Ltd.Inventors: Kazuaki Morita, Kokichi Tobita, Yoshikazu Hirai, Teruyuki Mine, Tadashi Sato
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Publication number: 20040256210Abstract: A push-button switch has a plunger to be pressed so as to activate its main body supported by a base member. A cap serving as a pressing member is on an outer edge portion of the plunger. The outer periphery of the cap is surrounded by a frame part of a lens member made of a transparent resin material such that the light from a light source disposed near the center of the plunger is guided to the upper edge part of the frame part.Type: ApplicationFiled: June 15, 2004Publication date: December 23, 2004Applicants: OMRON Corporation, Fujitec Co., Ltd.Inventors: Kazuaki Morita, Kokichi Tobita, Yoshikazu Hirai, Teruyuki Mine, Tadashi Sato